文献类型：期刊文献

中文题名：CO_2/CH_4/N_2在沸石13X-APG上的吸附平衡

英文题名：Adsorption equilibrium of CO_2,CH_4 and N_2 on zeolite 13X-APG

作者：孔祥明[1];杨颖[1];沈文龙[1];李平[1];于建国[1]

机构：[1]华东理工大学化学工程联合国家重点实验室,上海200237

年份：2013

卷号：64

期号：6

起止页码：2117

中文期刊名：化工学报

外文期刊名：CIESC Journal

收录：CSTPCD;;EI(收录号：20132716471239);Scopus;北大核心:【北大核心2011】；CSCD:【CSCD2013_2014】；

语种：中文

中文关键词：吸附等温线;沸石13X—APG;二氧化碳;甲烷

外文关键词：adsorption isotherms; zeolite 13X-APG; carbon dioxide; methane

摘要：采用磁悬浮热天平测量了CO2、CH4与N2在沸石13X-APG上的吸附等温线,温度为293、303、333和363K,压力为0～500kPa。对吸附平衡实验数据采用multi-site Langmuir模型和Sips模型进行拟合,均得到良好的拟合效果,非线性回归得到吸附热等模型参数,可为变压吸附工艺过程的开发提供基础热力学数据。将沸石13X-APG吸附分离性能与文献中报道的吸附材料(如沸石分子筛、活性炭、金属有机骨架材料和介孔硅分子筛)性能相比较。通过比较CO2、CH4与N2吸附容量以及相对分离系数,探讨CO2/CH4(垃圾填埋气或者CO2强化煤层甲烷回收气)体系、CO2/N2(燃煤电厂、水泥厂以及焦炭厂烟道气)体系以及CH4/N2(煤层气)体系吸附分离的高效材料,为未来二氧化碳吸附捕集和甲烷吸附回收提供基础数据。
Adsorption equilibrium isotherms of CO2, CH4 and N2 on zeolite 13X-APG were measured by Rubothermmagnetic suspension balance in the pressure range of 0--500 kPaat temperatures of 293, 303, 333 and 363 K. The multi-site Langmuir model and Sips model were used to fit the experimental data, and the model parameters were obtained by the non-linear regression. Furthermore, the adsorption capacities of CO2 , CH4 and N2, as well as the separation factors of CO2/CH4, CO2/N2 and CH4/N2 gas mixtures on zeolite 13X-APG were compared with those on other materials reported in literature, including zeolites, activated carbon, mesoporous silica and metal-organic frameworks. The evaluation is given on the feasibility and efficiency of adsorption using 13X-APG as adsorbent to capture CH4 from both landfill gases and CO2 enhanced coal bed gases （CO2/CH4）, to capture CO2 from flue gases of coal-fired power plants, cement plants and coking plants （CO2/N2）, and to concentrate CH4 from coal mine gases （CH4/N2）.